Using the Sagittal Notation System

I'm thinking of adding the Sagittal solution to a new notation app I'm developing. Looking over the symbols and some of the documentation still leaves me with questions on how to best do this.

To me it looks like the Sagittal solution is based around the natural intonation level with sharp intonation levels above and mirrored flat intonation levels below. I was thinking of making a simple hashmap of key value pairs, where the key would be a ratio or a frequency and the value would be a reference to the glyph for a given intonation level. Since I use the Web Audio API I define pitches as frequencies already. What I was thinking is that the RHS cent part of a frequency might be used as a key to query the hashmap?

I have not seen anything so far that verifies that I'm on the right track with this approach. I realize that the deep math aspects are already complete in the Sagittal solution and now I'm just looking to make use of it in my fresh take at a notation system. I think Sagittal is a wonderful solution and I look forward to making practical use of it. All advice is appreciated.

Hi Stardrive,
It sounds like you're on the right track. I will contact you by email so we can discuss your requirements and work out the simplest way to get you started with Sagittal. But in the meantime I suggest you take a look at the Sagittal section of the SMuFL documentation http://www.smufl.org/download/ http://www.smufl.org/download/ with a view to using the Bravura font http://www.smufl.org/fonts/ http://www.smufl.org/fonts/ which contains Sagittal with a pre-release version 3 mapping, rather than the fonts on the Sagittal website which still have the version 2 mapping. Also, I suggest you read http://www.sagittal.org/sagittal.pdf http://www.sagittal.org/sagittal.pdf and http://www.sagittal.org/whatpitch.txt http://www.sagittal.org/whatpitch.txt if you haven't already. It might also be good to install and get up to speed on Manuel Op de Coul's Scala program http://www.huygens-fokker.org/scala/ http://www.huygens-fokker.org/scala/ as it contains the most complete implementation of Sagittal notation which you can check your own against, and you might consider using its Sag*.par files as input to your own.

I've reviewed the Scala scale format and then spotted the ratios in the Sagittal character Map. Seems to be making full sense to me now. I should then be able to pass arbitrary ratios into the hashmap and return the right glyphs.

If there are recent updates to Sagittal (after 2004) or future plans, please let me know, thanks.